diff --git a/ChangeLog b/ChangeLog
index 31d902f..887b1f4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2021-02-18  NIIBE Yutaka  <gniibe@fsij.org>
+
+	* VERSION: 1.19.
+	* doc/chopstx.texi (VERSION): 1.19.
+
 2021-02-17  NIIBE Yutaka  <gniibe@fsij.org>
 
 	Backport from master.
diff --git a/NEWS b/NEWS
index 098399f..88f6aac 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,26 @@
 NEWS - Noteworthy changes
 
 
+* Major changes in Chopstx 1.19
+
+  Released 2021-02-18
+
+** Acknowledge button support for GNU/Linux emulation
+User is asked acknowledge by RET with standard input.
+
+** USB driver for GNU/Linux emulation
+It shows start-up message now.
+
+** ADC driver for GNU/Linux emulation
+It uses getrandom(2), output is not deterministic any more.
+
+** Bug fix for GNU/Linux emulation
+When creating a thread, allocated memory for struct chx_thread was not
+initialized by chopstx_create_arch, assuming getcontext does it well.
+To make sure (getcontext would not update the area for FPU registers,
+when not used), it's now initialized by zeros.
+
+
 * Major changes in Chopstx 1.18
 
   Released 2019-12-30
diff --git a/README b/README
index 318ac71..8c89ea6 100644
--- a/README
+++ b/README
@@ -1,6 +1,6 @@
 Chopstx - Threads and only Threads
-							Version 1.18
-							  2019-12-30
+							Version 1.19
+							  2021-02-18
 							Niibe Yutaka
 					     Flying Stone Technology
 
@@ -60,8 +60,8 @@ For STM32 Primer2, see the directory: example-primer2.
 Future Works
 ============
 
-RISC-V port (for GD32VF103) is under development.  Please have a look
-at the master branch.
+RISC-V port (for GD32VF103) is available in 2.x.  Please have a look
+at the master branch, and test it if possible.
 
 Convenience function to determine the bottom of thread stack,
 configuration of thread size by compiler's output would be next things
diff --git a/VERSION b/VERSION
index 067d93c..74aad3c 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-release/1.18
+release/1.19
diff --git a/doc/chopstx.texi b/doc/chopstx.texi
index 6a7a486..febb3a9 100644
--- a/doc/chopstx.texi
+++ b/doc/chopstx.texi
@@ -1,7 +1,7 @@
 \input texinfo                      @c -*-texinfo-*-
 @c %**start of header
 @setfilename chopstx.info
-@set VERSION 1.18
+@set VERSION 1.19
 @settitle Chopstx Reference Manual
 @c Unify some of the indices.
 @syncodeindex tp fn